X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m25.mx.aol.com ([64.12.137.6] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with ESMTP id 2777685 for flyrotary@lancaironline.net; Wed, 05 Mar 2008 01:58:28 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.6; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-m25.mx.aol.com (mail_out_v38_r9.3.) id q.ccc.2b7499e2 (29679) for ; Wed, 5 Mar 2008 01:57:47 -0500 (EST) From: WRJJRS@aol.com Message-ID: Date: Wed, 5 Mar 2008 01:57:47 EST Subject: Re: [FlyRotary] Re: Exhaust? was [FlyRotary] engine installation pictures To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1204700267" X-Mailer: 9.0 SE for Windows sub 5044 X-Spam-Flag: NO -------------------------------1204700267 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable =20 In a message dated 3/4/2008 8:32:11 PM Pacific Standard Time, =20 gregw@onestopdesign.biz writes: Yeah, and my friend in SoCal, the Racer again, says that the 20B racers dow= n=20 there wrap, and it really helps. But then again, racers...... Greg Greg, And they tested this how? With what instrumentation? So you know I have =20 built racing cars and bikes for others and I have road raced motorcycles mys= elf. =20 The only coating or wrap I could find that worked was the Jet-Hot coating.=20 That was on a motorcycle. The in cowl temps were reduced by 15=B0F. There w= asn't=20 any HP increase that I could determine reliably. I did record an increase o= n=20 the wheel dyno but not enough to be certain it wasn't just different temp a= nd=20 baro pressure conditions. The rotary exhaust temperature is so much hotter=20 that Jet-Hot has only had a suitable coating for about a year and a half. I= 'd=20 try that if you must. Shielding, even thin and close has proven to be=20 effective, as has zirconia ceramic blanket. The wrap may not have actually=20= caused the=20 cracking on the exhaust system mentioned previously but it certainly makes=20 it impossible to detect cracks before they get dangerous. I'd stay away fro= m=20 wraps for just that reason. Bill Jepson **************It's Tax Time! Get tips, forms, and advice on AOL Money &=20 Finance. (http://money.aol.com/tax?NCID=3Daolprf00030000000001) -------------------------------1204700267 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable
In a message dated 3/4/2008 8:32:11 PM Pacific Standard Time,=20 gregw@onestopdesign.biz writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>
Yeah, and my friend in SoCal, the Racer again, say= s that=20 the 20B racers down there wrap, and it really helps.  But then again,= =20 racers......
Greg
Greg,
And they tested this how? With what instrumentation? So you know I have= =20 built racing cars and bikes for others and I have road raced motorcycles mys= elf.=20 The only coating or wrap I could find that worked was the Jet-Hot coating. T= hat=20 was on a motorcycle. The in cowl temps were reduced by 15=B0F. There wasn't=20= any HP=20 increase that I could determine reliably. I did record an increase on the wh= eel=20 dyno but not enough to be certain it wasn't just different temp and baro=20 pressure conditions. The rotary exhaust temperature is so much hotter that=20 Jet-Hot has only had a suitable coating for about a year and a half. I'd try= =20 that if you must. Shielding, even thin and close has proven to be effective,= as=20 has zirconia ceramic blanket. The wrap may not have actually caused the crac= king=20 on the exhaust system mentioned previously but it certainly makes it impossi= ble=20 to detect cracks before they get dangerous. I'd stay away from wraps for jus= t=20 that reason.
Bill Jepson



It's Tax=20= Time! = Get tips, forms and advice on AOL Money & Finance.
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